Increase maximum URI size for EC2 API to 16k

The EC2 API supports both HTTP GET and POST agnostically.  It also supports
user-data of 16k -- meaning that client tools could generate 16k URIs.
The WSGI default limit is 8k; this raises it.

Fixes bug 1098646.

Change-Id: Idec460d88b2affab970c9d9f39fa61295db035c5

1 files changed, 21 insertions, 0 deletions

diff --git a/nova/tests/test_wsgi.py b/nova/tests/test_wsgi.py
index b04bc3e03..cd64688a2 100644
--- a/nova/tests/test_wsgi.py
+++ b/nova/tests/test_wsgi.py
@@ -22,6 +22,8 @@ import os.path
 import tempfile
 
 import eventlet
+import httplib2
+import paste
 
 import nova.exception
 from nova import test
@@ -108,6 +110,25 @@ class TestWSGIServer(test.TestCase):
         server.stop()
         server.wait()
 
+    def test_uri_length_limit(self):
+        server = nova.wsgi.Server("test_uri_length_limit", None,
+            host="127.0.0.1", max_url_len=16384)
+        server.start()
+
+        uri = "http://127.0.0.1:%d/%s" % (server.port, 10000 * 'x')
+        resp, _ = httplib2.Http().request(uri)
+        eventlet.sleep(0)
+        self.assertNotEqual(resp.status,
+                            paste.httpexceptions.HTTPRequestURITooLong.code)
+
+        uri = "http://127.0.0.1:%d/%s" % (server.port, 20000 * 'x')
+        resp, _ = httplib2.Http().request(uri)
+        eventlet.sleep(0)
+        self.assertEqual(resp.status,
+                         paste.httpexceptions.HTTPRequestURITooLong.code)
+        server.stop()
+        server.wait()
+
 
 class TestWSGIServerWithSSL(test.TestCase):
     """WSGI server with SSL tests."""